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Debian: CVE-2019-18625: suricata -- security update

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Debian: CVE-2019-18625: suricata -- security update

Severity
5
CVSS
(AV:N/AC:L/Au:N/C:N/I:P/A:N)
Published
01/06/2020
Created
02/04/2020
Added
02/03/2020
Modified
02/10/2020

Description

An issue was discovered in Suricata 5.0.0. It was possible to bypass/evade any tcp based signature by faking a closed TCP session using an evil server. After the TCP SYN packet, it is possible to inject a RST ACK and a FIN ACK packet with a bad TCP Timestamp option. The client will ignore the RST ACK and the FIN ACK packets because of the bad TCP Timestamp option. Both linux and windows client are ignoring the injected packets.

Solution(s)

  • debian-upgrade-suricata

References

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